Sewing machine



March 19, 1935. N. v. CHRISTENSEN SEWING MACHINE Filed July 9, 1931 Mm1C 5 Sheets-Sheet l Enventor March 19, 1935. N. v. CHRISTENSEN SEWIN GMACHINE Filed July 9, 1951 5 Sheets-Sheet 2 tornen m g March 19, 1935.N, v. CHRISTENSEN 1,995,092

v SEWING MACHINE Filed July 9, 1931 5 Shets-Sheet 3 MM IZQY WM attorneysSEWING MACHINE Filed July 9, 1951 5 Sheets-Sheet 4 ihmentor Gttorncg):

March 19, 1935. N. v. CHRISTENSEN SEWING MACHINE Filed July 9, 1931 5Sheets-Sheet 5 3nventor Fm MWQM I Gttorpnegg' ing bracket for the feedwheels on the line 6-6 Patented Mar. 19, 1935 stresses MAY 12 1942.

PATENTWOFFICE SEWING MACHINE Norman V. Christensen, Chicago, Ill.,assignor to Union Special Machine Company, Chicago, 111., a corporationof Illinois Application July 3, 1931, Serial No. 549,787

36 Claims.

The invention relates to new and useful improvements in a sewing machinehaving feed wheels rotating about vertical axes for supporting andfeeding the fabric to the stitching mechanism, and commonly known as acup feed machine.

An object of the invention is to provide a machine of the above typewherein the feed wheels are supported from above by an overhangingbracket so as to provide a clearance space beneath the feed wheels forthe manipulation and handling of the fabric being stitched.

Another object of the invention is to provide a machine of the abovetype wherein the main shaft and all of the parts operated thereby foractuating the feed wheels and the stitchingmechanism are located abovethe feed wheels so as to simplify and reduce the necessary parts forimparting movement from the main shaft to the feed wheels and stitchforming devices.

A further object of the invention is to provide a machine of the abovetype wherein the stitch forming mechanism consists of cooperatingdevices, each of which has a back and forth movement in a single plane.

A still further object of the invention is to provide a machine havingfeed wheels rotating about vertical axes wherein said axes are locatedin a plane cutting a vertical plane containing the reciprocating needleat an acute angle.

A still further object of the invention is to provide a machine of theabove type wherein the feed wheels are mounted on and supported by thelower ends of the actuating shafts therefor.

These and other objects will in part be obvious and will in part behereinafter more fully disclosed.

In the drawings which show by way of illustration one embodiment of theinvention- Figure 1 is a side view of a machine embodying the invention;

Fig. 2 is a front view of the same;

Fig. 3 is a top plan view of the same;

Fig. 4 is a sectional view on the line 44 of Fi 3;

Fig. 5 is a sectional view on the line 5-5 of Fig. 1;

Fig. 6 is a sectional view through the supportof Fig. 3, andshowing-also in section the supporting parts for the inner feed wheel;

Fig. '7 is a view partly in plan and partly section on the line'7-7 ofFig. 2;

Fig. 8 is a view partly in side elevation and partly in section showingthe outer feed wheel and the fabric guide for directing the fabricsections to the feed wheels;

Fig. 9 is a side view of the feed wheels showing the fabric guide inplace; and

Fig. 10 is a detail view of the various stitch forming elementsillustrating the concatenations of the threads in forming the overedgestitch.

The invention is directed to a sewing machine having feed wheels mountedfor rotation about vertical axes. These feed wheels are attached to thelower ends of the operating shafts'therefor, and the operating shaftsare mounted in an overhanging supporting bracket carried by a standardprovided with a supporting base. Mounted in the standard in suitablebearingstherefor is a main actuating shaft, and this main actuatingshaftis located above the feed wheels. One of the feed wheels isintermittently operated by a train of devices actuated by the mainshaft. The other feed wheel is connected thereto by a gear so that bothfeed wheels are positively driven. The axes of the shafts are mounted ina vertical plane cutting the axis of the main shaft at an acute angle.The inner feed wheel is mounted so that it may be moved away from theouter feed wheel for the insertion of the material that is to bestitched. The needle for penetrating the fabric'sections projectingabove the feed wheels is mounted for movement in a vertical plane atright angles to the axis of the main shaft and cutting the planecontaining the axes of the feed wheels at. an acute angle. The needle ispreferably a curved needle and is attached to an oscillating lever whichis connected directlyto a pitmair cooperating with an eccentric memberon the main actuating shaft. A thread carrying member is mounted foroscillation on a supporting shaft and disposed so as to engage theneedle thread loop thrownout by the needle after it passes through thefabric sections. This shaft is inclined to a vertical plane containingthe needle, and also to a vertical plane. containing the fabric sectionsbeing stitched, so that the thread carrying member will pass close tothe needle when engaging the needle thread loop, and will then moveupwardly and inwardly to a point above the edges of the fabric sectionsbeing stitched. Cooperating with-this first-named thread carrying memberand with'the needle as it enters the fabric is a second thread carryinglooper which is likewise mounted on a shaft for oscillation. The shaftcarrying the second thread carrying looper is inclined to a verticalplane containing the needle, and also to a vertical plane containingthefabric sections, so that this second thread carrying looper willcooperate with the first thread carrying looper at a point above theedge of the fabric sections being stitched, and then move to a positionwhere the needle cooperates with said second thread carrying looper asit moves forward to enter the fabric sections. The stitch formingmechanism therefor includes three cooperating elements, each of whichmoves back and forth in a single plane. The thread carrying loopercooperating with the needle after it passes through the fabric sectionsis mounted on the overhanging bracket, and the support for the looper isoscillated by an eccentric strap connected to an arm carried thereby andcooperating with an eccentric member on the main shaft. The shaftcarrying the second thread carrying looper is mounted on the outer faceof the standard and operated by an eccentric strap which is connected toan arm carried by a shaft and which cooperates with an eccentric memberon the main actuating shaft. Means is provided for separating the feedwheels to permit the insertion of the material. Fabric guiding means isprovided for directing the fabric to the feed wheels, and associatedwith the feed wheels are the usual stitch finger, fabric strippingdevices and thread cutter.

It is thought that the invention will possibly be better understood by adetail description of the present illustrated embodiment. The machineincludes a supporting standard or housing 1 having a base 2 providedwith suitable means whereby said standard or housing may be attached toa supporting table. This standard or housing is provided at one sidethereof with a laterally projecting overhanging bracket 3'. The housingor standard, together with its supporting base and projecting bracketconstitutes the entire frame of the machine. This bracket, as shown, isformed integral with the standard. It

'may, however, be made separate, if desired. The

feedwheels for supporting and feeding the fabric sections are carried bythis overhanging bracket 3. The outer feed wheel is indicated in thedrawings at 4, and the inner feed wheel at 5. The outer feed wheel isattached to a shaft 6 mounted for rotation in a bearing sleeve 7 whichis supported in a depending sleeve 8 carried by the overhanging bracket3. At the upper end of the shaft 6 is a clutch drum 9 to whichintermittent rotation is imparted by means of a clutch disk 10. Theclutch drum 9 is prevented from retrograde movement by a disk 11 whichis attached to the overhanging bracket. This clutch mechanism forimparting the intermittent feed motion to the feed wheel carried by theshaft 6 may be ofany desired character. As illustrated, it is of thetype shown in the patent granted to Long and Sliwa November 20, 1928,No. 1,692,130, and detail description of this clutch operating mechanismis not thought necessary. The clutch drum is oscillated by means of alink 12'which is pivoted to a ball stud 13 carried by an arm attached tothe disk 10. The link 12 ispivoted to a ball stud 14 adjustably mountedin a slot 15 of the arm 16 of the bell.

crank lever. This bell crank lever is fixed to a shaft 1'? mounted insuitable bearings in the frame of the machine. The arm 18 of the bellcrank lever carries a ball stud 19 to which the eccentric strap 20 isattached. The eccentric strap cooperates with an eccentric member 21carried by the main shaft 22. As shown, said eccentric member is in theform of a ball eccentrically mounted on the shaft. It may be in the formof a crank or otherwise constructed for imparting the rocking motion tothe bell crank lever.

The main actuating shaft 22 is mounted in suitable bearings 23 and 24carried by the standard of the machine. Said shaft is rotated by meansof a belt wheel 25.

The feed wheel 5 is carried by a shaft 26 which is mounted in a bearingsleeve 27 supported in a bearing sleeve 28 carried by a rock lever 29secured to a stud 30, which stud is journaled in a bushing 31 mounted ina lug 32 projecting from the inner wall of the overhanging bracket 3.The shaft 26 is prevented from endwise movement in the sleeve 27 by theopposed faces of the feed wheel 5, and a thrust collar 33 which issecured to the upper end of the shaft by a set screw 34. A shaft 35slidably engages a recess 36 in the shaft 26 and is keyed to the shaft26 by a lug 37 which engages a slot in the upper end of the shaft 26.This causes the shafts to rotate together, but permits a slight endwisemovement of one shaft relative to the other. The shaft 35 is connectedthrough a universal joint 38 to a shaft 39 mounted for rotation in abushing 40 carried by a lug 41 projecting inwardly from the inner wallof the overhanging bracket 3. On the upper end of this shaft 39 is agearwheel 42 which meshes with a gear wheel 43 fixed to the shaft 6. Whenthe shaft 6 is turned for feeding the material, it will, through thegear 43 positively rotate the gear wheel 42 which is positivelyconnected to the shaft 26, and thus both of the feed wheels will bepositively rotated through the intermittent clutch mechanism referredto. By shifting the stud 14, the extent of feeding movement imparted tothe feed wheels may be varied.

It is noted that the main shaft 22 is located above the feed wheels, asshown in Fig. 1, and both feed wheels are positively driven by a clutchmechanism which is connected to an eccentric member on the mainshaftsimply through the rock lever, the eccentric strap for oscillating thesame, and the link for transmitting the oscillations of the rock leverto the clutch drum. These operating parts lie substantially in a singleplane at right angles to the main actuating shaft.

The feed wheels are separated by swinging the rock lever 29. This isaccomplished in the following manner. The rock lever 29 is provided witha laterally projecting arm 44 which extends through the wall of theoverhanging bracket and is adapted to be engaged by the lug 45 carriedby a lever 46 which is freely mounted on an extension of the shaft 17.This lever extends to the rear of the machine and is adapted to beconnected with any suitable manually operated means for oscillating thelever, and when the lever is depressed, it will lift the arm 44 so as toswing the rock lever and thus separate the feed wheels. There is acoiled tension spring 48 which normally turns the lever 46 in a counterclockwise direction as viewed in Fig. 1,

so as to release the arm 44 when the manually An abutment screw 51threaded into the tube bears against the inner end of the compressionspring. The compression spring in turn bears against the plunger andnormally forces the same outward, so that the outer rounded head endthereof bears against the bearing sleeve 28 supporting the inner feedwheel. By this arrangement, the inner feed wheel is yieldingly pressedagainst the outer feed wheel, and may, at the will of the operator, beseparated therefrom to permit the insertion or removal of the materialbeing stitched.

The material being stitched is clamped between the feed wheels 4 and .soas to project slightly above the same. The fabric is thus supported andfed to the stitching mechanism. The stitching mechanism includes aneedle 52 which as shown in the drawings is a curved needle. The needle52 is carried by a needle lever 53. The lever 53 is pivotally supportedon a stud 54 carried by a lug 55 formed integral with the overhangingbracket 3. An eccentric strap 56 is pivoted at 5'7 to the lever, andcooperates with an eccentric 58 on the main actuating shaft 22. Theneedle lever is mounted so that the needle moves back and forth in avertical plane cutting the axis of the actuating shaft substantially atright angles. The plane of the needle, however, cuts the vertical planecontaining the axes of the shafts supporting the feed wheels 4 and 5 atan acute angle. The shaft '26 supporting the inner feed wheel is at oneside of the plane of oscillation of the needle, while the shaft 6supporting the outer feed wheel is at the other side of this plane, andthe plane of oscillation of the needle intersects the plane containingthe axes of the shafts supporting the feed wheels substantially at thepoint of contact between the feed wheels. Thus the fabric sections arefirmly gripped and supported at a point adjacent where the needlepenetrates the fabric sections. By this arrangement of the axes of theshafts of the feed wheels, clearance is provided above the feed wheelsfor the needle and its operating mechanism, notwithstanding that theplane of oscillation of the needle intersects the gripping point betweenthe feed wheels. Furthermore, by this arrangement of the feed wheels,the operator feeding the material to the feed wheels can sit in a muchmore comfortable position, than is possible in the feeding of a machineof this type where the feed wheels are mounted so as to rotate aboutaxes lying in a plane parallel with the line of reciprocation of theneedle. In

the present embodiment of the invention, the line of feed is inclined tothe front face of the machine and the axis of the main actuating shaft,and of course, willbe in a plane inclined from the operator toward thefront edge of the table supporting the machine. This gives theoperator-more room to handle the material, and as noted, a morecomfortable sitting position for feeding the material to the machine.The operator also has the advantage of full clearance beneath the feedwheels as both feed wheels are supported from above.

Cooperating with the needle as it emerges from the material is a threadcarrying member 59 which is shown in the form of a'looper having an eyeand carrying its own thread. This looper is provided with a shank 60mounted in an arm 61 attached to a sleeve 62 which in turn is mountedfor free oscillation on a supporting stud 63. The supporting stud 63 iscarried by an arm 64 projecting laterally from a supporting bracket 65which is secured to the outer face of the overhanging bracket 3 bysuitable bolts 66.

The sleeve 62 is provided with'a projecting arm 6'7 carrying a ball studto which a link 68 is attached. This link 68 cooperates with aneccentric 69 on the main actuating shaft 22. The axis of the stud 63lies in a line which is inclined to' the vertical plane in which theneedle moves back and forth. It is also inclined to a vertical planecontaining the fabric sections being stitched, and therefore, the pathof movement of the looper 59 is such that the looper point will pazsinto the needle thread loop thrown out by the needle, and then thelooper will move upwardly and toward the machine to a point over andbeyond the edges of the fabric sections being stitched. In Fig. '7, thelooper is shown as moved to the extreme end of its forward stroke.

Cooperating with this looper 59 and with the needle before it penetratesthe fabric sections, is a thread manipulating member '70 which as shownin the drawings is a non-thread carrying looper and has a forked endadapted to engage the looper thread loop of the looper 59. This looperis provided with a shank '71 which is mounted in an arm 72 clamped to asleeve '73 mounted in turn for oscillation on a stud '74. The stud '74is mounted in a lug or bracket '75 formed as an integral part of thestandard orframe of the machine. The sleeve '73 carries a projecting arm'76 which is provided with a ball stud'7'7.

An eccentric strap '78 is attached to the ball stud '7'7 and cooperateswith an eccentric '79 on the main actuating shaft 22.

The axis of the stud '72 is inclined to the vertical plane containingthe path of oscillation of the needle. It is also inclined to the planeof movement of the fabric sections, and therefore,.

thelooper '70 will move from a position beneath the looper 59 so as toengage the looper thread loop and carry the same downwardly and towardthe inner side of the fabric section so as to position said looperthread loop for the needle to enter as it advances for entering thefabric sections.

It will be noted from the above that the stitch forming mechanism is avery simple form of mechanism wherein each element of the stitch formingmechanism moves back and forth in a single plane and no lateral movementis necessary to any one of the stitch forming elements. The stitchforming mechanism is, therefore, very positive in its action, the needlethread loop being entered with certainty by the looper 59 and the looperthread loop being entered with certainty by the hook end of the looper'10, and the looper thread will be positively positioned with certaintyfor the needle to enter. This all contributes to a very high speedmachine, wherein 4 'the eccentric member which actuates the same and thestitching implement operated thereby. Therefore, the parts will maintaintheir timing and can be operated rapidly-and with little consumption ofpower. All of .the parts of the stitch forming devices, except theeccentrics and the and also the devices for operating the feed wheels,

are arranged above the plane of the feed wheels. This is what enablesfew operating parts to be -used, and the compact simple actuatingdevices utilized, which have been described above.

It will be understood that instead of a thread carrying loopercooperating with a needle, a

non-thread carrying looper may be used, and likewise, instead of anon-thread carrying looper operating to position the loop for the needleto enter, a thread carrying looper may be used, in which case, thisnon-thread carrying loop will be positioned for entering the needleloop. Wherever the looper is referred to, it is understood that it maybe either of the thread carrying type or a non-thread carrying type.

The stitch finger is provided, which stitch finger is carried by an arm81 secured by suitable screws 82, 82 to a flange 83 formed as a part ofthe sleeve 7. For the sake of clearness of illustration, this stitchfinger is not shown in Figures 6, 8 and 9. The stitch finger overliesthe upper edges of the fabric sections. The needle passes beneath thesame as it enters the fabric sections, and the thread loops are carriedover the stitch finger and are drawn against the same and finally fedoff from the end of the stitch finger. p

Also mounted on the flange 83 is a stripper member 84 secured to theflange by screws 85, 85.- This is a fabric stripping member which stripsthe stitched fabric from the teeth of the feed wheel 4. The sleeve 27 isalso provided with a flange 86 on which is mounted a stripper andguidemember 87. There is also a stripper plate and thread cutter 88secured to the frame of the machine by suitable screws 89, 89. Thestripper plate and thread cutters are of the usual character, except asto the manner of supporting the same. All of these parts are carried bythe sleeves '7 and 2'7 in which the shafts supporting the feed wheelsare mounted, except the thread cutters and the stripper associatedtherewith which is carried by the main frame, and positioned so as topermit the inner feed wheel to move away from the same. It will be notedthat this inner feed wheel, as shown in Fig. 3 of the drawings, ismounted for movement in a plane containing the axes of the shaftssupporting the feed wheels, and therefore, in a plane at right angles tothe line of feed.

The machine is particularly adapted for sewing stockings, and anuncurler is provided which is shown'at 90 in the drawings, and thisuncurler includes the usual guide plate and associated uncurling guidemembers, and is mounted on an arm 91 pivoted at 92 to a bracket 93. Thebracket 93 is in turn secured to a supporting bracket 94 so that it maybe properly adjusted for positioning the guide relative to the feedwheels. A yielding locking bolt 95 is provided for holding the guide inset positions. A hand lever 96 is arranged for releasing the lookingbolt and for swinging the guide. This guide and the parts just describedform no part of the present invention, and it will be understoodthatother types of guidingdevices may be used for directing the fabricsections.

Any suitable means may be provided for lubricating the actuating shaftand the eccentric associated therewith. As shown in the drawings, thereis an oil sump 97 having a pipe 98 extending upwardly into the same.This pipe connects with a port 99 leading to the bearing for the shaft17. It also connects with a port 100 leading to a port 101 along theouter face of the bushing 23 and to a recess 102 at the end of the mainshaft. The main shaft has a chamber 103 centrally thereof with radialports leading to the eccentrics, and the eccentrics have radial portsleading to the outer face thereof. The eccentric .straps also have oilports extending longitudinally thereof for lubricating the ball studconnections are no parts of substantial proportions beneath the feedwheels, and therefore, there is a full clearance space for themanipulation of the fabric sections being stitched. The line of feed, as

noted, is inclined toward the table, and this greatly facilitates theease with which the fabric sections are directed to the feed wheels. Thefeed wheels are positively driven so that when two fabric sections arebeing joined, they will be evenly fed and fed uniformly to the stitchingmechanism. The feeding mechanism which is positively operated bydirectly connected actuating parts will positively feed the fabricsections step by step for each reciprocation of the needle. The needleis directly connected to the eccentric strap which operates thesame, andis, therefore, moved positively back and forth withoutany lost motion,and will be caused to enter the fabric sections carrying the needlethread loop therethrough. As the needle begins its retracting movement,the needle thread loop is thrown out, and the cooperating looper engagessaid needle threadloop. This looper is preferably of the thread carryingtype and it is moved back and forth in a single plane without anylateral movement. It will, with certainty, enter the needle thread loopand carry its own thread loop to a position above the fabric sections,where it is engaged by a non-thread carrying looper. The forked end ofthe non-thread carrying looper takes the looper thread loop and carriesit inwardly and downwardly and positions it for the needle to enter.This non-thread carrying looper, moving as it does in a single plane,will with certainty, engage the looper thread loop and position the samefor the needle.

There is a needle guide 104 attached to the flange 83 of the sleeve 7,which serves to guide the needle as it emerges from the fabric sectionsand aids in the throwing out of the needle thread loop. As shown in thedrawings, there are thread tensions 105 and 106 for the threads, whichtensions are carried by a bracket secured to the frame or standard ofthe machine. The tension 105 is for the needle thread. Sliding in thebracket supporting this tension is a plunger 108 which operates throughsuitable devices for separating the members of the tension 105. Thisplunger has the end thereof tapered so that when the lever 46 moves intoengagement with the tapered end it will force the plunger inward or tothe right as viewed in Fig. 3, and this will release the tension. It isonly the tension on the needle thread that is released.

, feed the same to the stitching mechanism. There Access may be had tothe parts within the frame or standard by cover plates 109, 110 and 111.The cover plate 111 is secured to the overhanging bracket 3 by suitablescrews and gives access to the clutch mechanism for operating the feedwheels. The cover plate 110 gives access to the oil sump, and is held inplace by a spring. It

also gives access to the bell crank lever and the link connectiontherebetween and the clutch drum. The cover plate 109 gives access tothe parts within the standard or frame and particularly the main shaftand the parts directly associated therewith.

It is obvious that many changes may be made in the details ofconstruction and the parts described without departing from the spiritof the invention as set forth in the appended claims, as it is believedthat the machine while of the feed -cup type, contains a basically newarrangement of parts contributing to simplicity in structure and ease inthe operation of the machine and in the feeding of the material beingstitched.

Having thus described the invention, what I claim as new and desire tosecure by Letters:

ating said feed wheels located entirely above the horizontal planecontaining said feed wheels.

2. In a sewing machine, the combination of a standard, a bracket memberextending laterally therefrom, a feeding mechanism supported by saidbracket and including vertically arranged shafts carried by anddepending from said bracket member, cooperating feed wheels rigidlyattached to the lower ends of said shafts, and means for actuating saidfeed wheels.

3. In a sewing machine, the combination of a standard, a bracket memberextending laterally therefrom, a feeding mechanism supported by saidbracket and including vertically arranged shafts carried by anddepending from said bracket member, cooperating feed wheels rigidlyattached to the lower ends of said. shafts, means for actuating saidfeed wheels, said actuating means for the feed wheels including a mainshaft, and devices operated thereby for imparting an intermittentmovement to the feed wheels, said shaft and operating devices beinglocated above the horizontal plane containing the feed wheels. 1

4. In a sewing machine, the combination of a standard, a bracket memberextending laterally therefrom, vertical shafts supported in anddepending from said bracket member, cooperating feed wheels on the lowerends of said shafts, a driving shaft supported in bearings in saidstandam and above the horizontal plane containing the feed wheels, anddevices actuated by said driving shaft for operating the feed wheels.

5. In a sewing machine, the combination of stitch forming mechanism, astandard, a bracket member extending laterally therefrom, verticallydisposed shafts supported in and depending from said bracket member,feed wheels at the lower ends of said shafts, a driving shaft supportedin bearings in said standard above a horizontal plane containing thefeed wheels, and devices operated by the driving shaft for actuatingsaid feed wheels, said stitch forming mechanism including operatingconnections with said driving shaft.

6. In a sewing machine, the combination of a standard, a bracketextending laterally therefrom, cooperating stitch forming deviceslocated at one side of the standard and beneath said bracket, feedwheels suspended from said bracket,

a driving shaft in said'standard, and devices operated thereby foractuating the feed wheels and the stitch forming devices.

7. In a sewing machine, the combination of a standard, a bracketextending laterally therefrom, cooperating stitch forming deviceslocated at one side of the standard and beneath said bracket, feedwheels suspended from said bracket, a driving shaft in said standard,and devices operated thereby for actuating the feed wheels and thestitch forming devices, said shaft and actuating devices being disposedabove a horizontal plane containing the feed wheels.

8. In a sewing machine, the combination of a standard, a bracketextending laterally therefrom, cooperating stitch forming deviceslocated at one side of said standard and including a needle movable inasingle plane, a looper adapted to engage the needle thread loop andmovable in a single plane, and a second looper cooperating with thefirst-named looper and with the needle as it enters the fabric movablein a single plane,

and cooperating feed wheels rotating about vertical axes for supportingand feeding 'the material to the stitch forming devices.

9. In a sewing machine, the combination of a standard, a bracketextending laterally therefrom, cooperating stitch forming deviceslocated at one side of said standard and including a needle movable in asingle plane, a looper adapted to engage the needle thr ad loop andmovable in a single plane, a second ooper cooperating with thefirst-named looper and with the needle as it enters the fabric movablein a single plane, and cooperating feed wheels suspended from saidbracket for supporting and feeding the fabric sections to said stitchforming devices.

10. In a sewing machine, the combination of a standard, a bracketextending laterally therefrom, cooperating stitch forming deviceslocated at one side of said standard and including a needle movable in asingle plane, a looper adapted to engage the needle thread loop andmovable in a single plane, a second looper cooperating with thefirst-named looper and with the needle as it enters the fabric movablein a single plane, vertical shafts mounted in and depending from saidbracket, and cooperating feed wheels rigidly secured to the lower endsof said shafts for supporting and feeding the fabric sections to saidstitch forming devices.

11. In a sewing machine, the combination of a standard, a bracketextending laterally therefrom, cooperating, stitch forming deviceslocated at one side of said standard and including a needle movable in asingle plane, a looper adapted to engage the needle thread loop andmovable in a single plane, a second looper cooperating with thefirst-named looper and with the needle as it enters the fabric movablein a single plane, cooperating feed wheels rotating about vertical axesfor supporting and feeding the material to the stitch forming devices, adriving shaft in said standard, and means actuated thereby for operatingsaid stitch forming devices and for operating said feed wheels, saiddriving shaft and said operating means being disposed above a horizontalplane containing the feed wheels.

12. In a sewing machine, the combination of a standard, a bracketextending laterally therefrom, cooperating stitch forming deviceslocated at one side of said standard and including a needle movable in asingle plane, a looper adapted to engage the needle thread loop andmovable in a single plane, a second looper cooperating with thefirst-named looper and with the needle as it enters the fabric movablein a single plane, cooperating feed wheels rotating about vertical axesfor supporting and feeding the material to the stitch forming devices, adriving shaft in said standard, an eccentric member carried by saidshaft and connected to said needle for imparting a movement thereto, aneccentric member carried by said shaft and connected to said firstlooper for imparting its movement thereto, an eccentric member carriedby the driving shaft and connected to said second looper for impartingits movements thereto, and means operated by said driving shaft foroperating said feed wheels.

13. In a sewing machine, the combination of a standard, a bracketextending laterally therefrom, cooperating stitch forming deviceslocated at one side of said standard, a needle movable back and forth, alooper adapted to engage the needle thread loop, a looper carrier forthe looper mounted for oscillation about a fixed axis, a second loopercooperating with the first looper and with the needle, a carrier forsaid second looper mounted for oscillation about a fixed axis, and feedwheels mounted for rotation about vertical axes for supporting andfeeding the fabric sections to the stitch forming devices.

14. In a sewing machine, the combination of a standard, a bracketextending laterally therefrom, cooperating stitch forming deviceslocated at one side of said standard, a needle movable back and forth, alooper adapted to engage the needle thread loop, a looper carrier forthe looper mounted for oscillation about a fixed axis, a second loopercooperating with the first looper and with the needle, a carrier forsaid second looper mounted for oscillation about a fixed axis, and feedwheels mounted for rotation about vertical axes for supporting andfeeding the fabric sections to the stitch forming devices, the axes ofthe feed wheels being disposed in a plane cutting a vertical planecontaining the path of movement of the needle at an acute angle.

15. In a sewing machine, the combination of a standard, a bracketextending laterally therefrom, cooperating stitch forming deviceslocated at one side of said standard, a needle movable back and forth, alooper adapted to engage the needle thread loop, a looper carrier forthe looper mounted for oscillation about a fixed axis, a second loopercooperating with the first looper and with the needle, a carrier forsaid second looper mounted for oscillation about a fixed axis, verticalshafts mounted in and depending from said bracket, and cooperating feedwheels mounted on the lower ends of said shafts for supporting andfeeding fabric sections to the stitch forming devices.

16. In a sewing machine, the combination of a standard, a bracketextending laterally therefrom, cooperating stitch forming deviceslocated at one side of said standard, a needle movable back and forth, alooper adapted to engage the needle thread loop, a. looper carrier forthe looper mounted for oscillation about a fixed axis, a second loopercooperating with the first looper and with the needle, a carrier forsaid second looper mounted for oscillation about a fixed axis, verticalshafts mounted in and depending from said bracket, and cooperating feedwheels mounted on the lower ends of said shafts for supporting andfeeding fabric sections to the stitch forming devices, said shafts beingmounted in a plane cutting a vertical plane containing the needle at anacute angle.

17. In a sewing machine, the combination of a standard, a bracketextending laterally therefrom, cooperating stitch forming deviceslocated at one side of said standard, a needle movable back and forth, alooper adapted to engage the needle thread. loop, a looper carrier forthe looper mounted for oscillation about a fixed axis, a second loopercooperating with the first looper and with the needle, a carrier forsaid second looper mounted for oscillation about a fixed axis, and feedwheels mounted for rotation about vertical axes for supporting andfeeding the fabric sections to the stitch forming devices, said axes ofthe feed wheels being disposed so that the line of feed is in adirection approaching the standard.

18. In a sewing machine, the combination of a standard, a. bracketextending laterally therefrom, cooperating stitch forming devicesincluding a needle, and feed wheels mounted for rotation about verticalaxes, the axes of said feed wheels being located in a plane cutting avertical plane containing the path of movement of the needle at an acuteangle.

19. In a sewing machine, the combination of a standard, abrackefiextending laterally therefrom, cooperating stitch formingdevices includ-' ing a needle, feed wheels mounted for rotation aboutvertical axes, the axes of said feed wheels being located in a planecutting a vertical plane containing the path of movement of the needleat an acute angle, and a driving shaft in said standard for operatingsaid stitch forming devices and said feed wheels, the axis of said shaftbeing at right angles to the plane containing the path of movement ofthe needle.

20. In a sewing machine, the combination of a standard, a bracketextending laterally therefrom, stitch forming devices including a needlemovable back and forth in a vertical plane, and vertically disposedshafts mounted in and depending from said bracket, feed wheels carriedthereby, the axes of said shafts being located in a plane cutting thevertical .plane containing the path of movement of the needle at anacute angle.

21. In a sewing machine, the combination of a standard, a bracketextending laterally therefrom, stitch forming devices including a needlemovable back and forth in a vertical plane, and vertically disposedshafts mounted in and depending from said bracket, feed wheels carriedthereby, the axes of said shafts being located in a plane cutting thevertical plane containing the path of movement of the needle at an acuteantically disposed shafts mounted in and depending from said-bracket,feed wheels carried thereby, the axes of said shafts being located in aplane cutting the vertical plane containing the path of 23. In a sewingmachine, the combination of a standard, a bracket extending laterallytherefrom, cooperating feed wheels mounted for rotation about verticalaxes, stitch forming devices including a curved needle, a pivoted armcarrying said needle, a driving shaft in said standard, an eccentricmember on said shaft, a member cooperating therewith and directlyconnected to said arm for oscillating said needle, a looper adapted toengage the needle thread loop, an arm carrying said looper, means forsupporting and oscillating said arm, an eccentric member on the drivingshaft, a member cooperating therewith and directly connected. to saidmeans for oscillating the looper supporting arm, a second looper, an armcarrying the same, means for supporting and oscillating said arm, aneccentric -member on said driving shaft, and a member cooperatingtherewith and directly connected to the oscillating means for the armfor the second looper.

24. In a sewing machine, the combination of a standard, a bracketextending laterally therefrom, cooperating feed wheels mounted forrotation about vertical axes, stitch forming devices including a curvedneedle, a pivoted arm carrying said needle, a driving shaft in saidstandard, an eccentric member on said shaft, a member cooperatingtherewith and directly connected to said arm for oscillating said needla looper adapted to engage the needle thread loop, an arm carrying saidlooper, means for supporting and oscillating said arm, an eccentricmember on the driving shaft, a member cooperating therewith and directlyconnected to said means for oscillating the looper supporting arm, asecond looper, an arm carrying the same, means for supporting andoscillating said arm, an eccentric member on said driving shaft, a

member cooperating therewith and directly con-' nected to theoscillating means for the arm for the second looper, vertical shaftscarried by said bracket anddepending therefrom and supportfrom the firstshaft to the second shaft carrying the feed wheels, an eccentric memberon the driving shaft, a member cooperating therewith, a

bell crank operated thereby, and an operating link attached to the bellcrank for actuating the clutch drum.

25. In a sewing machine, the combination of a standard, a bracketextending laterally therefrom, a shaft mounted in and depending fromsaid bracket, an outer feed wheel carried at the lower end of saidshaft, means for positively and intermittently rotating said shaft, asecond shaft, an inner feed wheel carried at the lower end thereof andcooperating with said first-named feed wheel, means for positivelydriving said shaft from the actuated shaft supporting the outer feedwheel, and means for supporting said shaft carrying the inner feed wheelwhereby said innerfeed wheel may be moved away from the outer feed wheelfor the insertion and removal of the material.

26. In a sewing machine, the combination of a standard, a bracket.extending laterally therefrom, a shaft mounted in and depending fromsaid bracket, an outer feed wheel carried at the lower end of saidshaft, means for positively and intermittently rotating said shaft, asecond shaft, an inner feed wheel carried at the lower end thereofand-cooperating with said first-named feed wheel, means for positivelydriving said shaft from the actuated shaft supporting the outer feedwheel, means for supporting said shaft carrying the inner feed wheelwhereby said inner feed wheel may be moved away from the outer feedwheel for the insertion and removal of the material, and a stitchforming mechanism including a needle movable in a vertical plane, theaxes of said shafts being disposed in a vertical plane cutting thevertical plane containing the needle at an acute angle, said means forsupporting said inner feed wheel being constructed so that the axis ofthe feed wheel is shiftable in a vertical plane containing the-axes'ofsaid feed wheels.

27. In a sewing machine, the combination of a standard, a bracketextending laterally therefrom, a shaft mounted in and depending fromsaid bracket, an outer feed wheel carried at the lower end of saidshaft, means for positively and intermittently rotating said shaft, asecond shaft, an inner feed wheel carried at the lower end thereof andcooperating with said firstnamed feed wheel, means for positivelydriving said shaft from the actuated shaft supporting the outer feedwheel, means for supporting said shaft carrying the inner feed wheelwhereby said inner feed wheel may be moved away from the outer feedwheel for the inseition and removal of the material, and a stitchforming mechanism including a needle movable in a vertical plane, theaxes of said shafts being disposed in a vertical plane cutting theverticalplane containing the needle at an acute angle, said means forsupporting said inner feed wheel being constructed so that the axis ofthe feed wheel is shiftable in a vertical plane containing the axes ofsaid.

feed wheels, said needle being carried by an arm mounted for oscillationabout a center above the feed wheels.

28. In a sewing machine, the combination of a standard, a bracketextending laterally therefrom, a shaft mounted in and depending fromsaid bracket, an outer feed wheel carried at the lower end of saidshaft, means for positively and intermittently rotating said shaft, asecond shaft, an inner feed wheel carried at the lower end thereof andcooperating with said first-named feed wheel, means for positivelydriving said shaft from the actuated shaft supporting the outer feedwheel, means for supporting said shaft carrying the inner feed wheelwhereby said inner feed wheel may be moved away from the 'outer feedwheel for the insertion and removal of the material, a stitch. formingmechanism including a needle movable in a vertical plane, the

axes of said shafts being disposed in a vertical plane cutting thevertical plane containing the needle at an acute angle, said means forsupporting said inner feed wheel being constructed so that the axis ofthe feed wheel is shiftable in a vertical plane containing the axes ofsaid feed wheels, a spring-pressed plunger engaging the support for theshaft carrying the inner feed wheel and yieldingly moving said feedwheel into engagement with the fabric sections, and a lever mounted onthe standard and connected to the supporting means for the shaftcarrying thein- 1 intermittently rotating said shaft, a second shaft,

an inner feed wheel carried at the lower end thereof and cooperatingwith said first-named feed wheel, means for positively driving saidshaft from the actuated shaft supporting the outer feed wheel, means forsupporting said shaft carrying the inner feed wheel whereby said innerfeed wheel may be moved away from the outer feed wheel for the insertionand removal of the material, a st'.-tch forming mechanism including aneedle movable in a vertical plane, the axes of said shafts beingdisposed in a vertical plane cutting the vertical plane containing theneedle at an acute angle, said means for supporting said inner feedwheel being constructed so that the axis of the feed wheel is shiftablein a vertical plane containing the axes of said feed wheels, aspring-pressed plunger engaging the support for the shaft carrying theinner feed wheel and yieldingly moving said feed wheel into engagementwith the fabric sections, a lever mounted on the standard and connectedto the supporting means for the shaft carrying the inner feed wheel formoving thesame away from the outer feed wheel, tension devices mountedon the standard, and means actuated by said lever for releasing thetensions when the feed wheels are separated.

30. In a sewing machine, a standard, a bracket extending laterallytherefrom, supporting sleeves mounted on and depending from saidbracket, shafts mounted in said sleeves, a feed wheel ate tached to thelower end of each shaft at the lower end of each sleeve, a flangecarried at the lower end of each sleeve, stitch forming devicesincluding a needle movable over said feed wheels, a needle guide, astitch finger, a fabric stripper mounted on the flange of the sleevecarrying the outer feed wheel, and a fabric stripper and guide mountedon the flange of the sleeve associated withthe inner feed wheel.

31. In a cup-feed sewing machine in which the advance of the fabric isaccomplished by the coincident intermittent rotation of tangent feedwheels, a stitch forming mechanism comprising a single needle, a singlethread carrying. looper, and a single non-thread carrying looper, eachof said three stitch forming elements reciprocating in a single path.

32. In a sewing machine, the combination of a standard, a memberextending outwardly therefrom, a feeding mechanism including cooperatingfeed wheels supported by said member, said feed wheels being locatedwholly at gone side of said standard, and stitch forming devices adaptedto operate on the material fed by the feed wheels, said stitch formingdevices operating on said fabric adjacent the feed wheels and betweenthe feed wheels and said member.

33. In a sewing machine, the combination of a standard, fabric feedingmeans supported by said standard including a pair of feed wheels locatedat one side of said standard and rotating about axes substantiallyparallel with the stand- -ard, means for supporting said feed wheelswhereby the feed wheel adjacent the standard is yieldingly moved towardthe other feed wheel for clamping and feeding the fabric; means forconnecting said feed wheels whereby the same movable relative thereto, asecond feed wheel mounted for rotation in said member, and meansoperating to yieldingly move said member whereby the feed wheel isyieldingly moved toward the other feed wheel for clamping and feedingthe fabric.

35. In a sewing machine, the combination of a standard, a bracketprojecting outwardly therefrom, a fabric-feeding mechanism includinginner and outer feed wheels, means for connecting said feed wheelswhereby the same are rotated in unison, and means for intermittentlyrotating said feed wheels, means for supporting said inner feed wheel onsaid bracket so that it is movable toward and away from the outer feedwheel, spring means for yieldingly pressing said inner feed wheel intoengagement with the outer feed wheel, and manually controlled means formoving the inner feed wheel away from the outer feed wheel.

36. In a sewing machine, the combination of a standard, a bracketprojecting outwardly therefrom, a fabric feeding mechanism includinginner and outer feed wheels, means for supporting said inner feed wheelon said bracket so that it is movable toward and away from the outerfeed wheel, spring means for yieldingly pressing said inner feed wheelinto engagement with the outer feed wheel, manually controlled means formoving the inner feed wheel away from the outer feed wheel, and meansfor positively rotating said inner and outer feed wheels.

NORMAN V. CHRISTENSEN.

